Too much, too soon

• 70% of boys and 53.5% of girls have seen porn by age 12; 100% of boys and 97% of girls have seen porn by age 16. (Source: The Sex Lives of Australian Teenagers by Joan Sauers.)

• 67% of teens have cleared out their browser history or cache to make sure their parents can’t view their online activity; 64% of parents do not use online parental controls or filtering software. (Source: Microsoft, 2011.)

• 88% of scenes in mainstream pornography contain some sort of physical or verbal aggression. Significantly, 94 per cent of that aggression is directed towards women. (Source: Aggression and Sexual Behavior in Best-selling Pornography Videos, University of Arkansas.)

• The most popular porn site on the internet attracts 4.4 billion page views per month. (Source: Google DoubleClick Ad Planner 2012.)

Tips for parents include:

• Create individual logins, passwords and security settings for each family member. Microsoft recommends that passwords contain at least eight characters and be a combination of upper-case and lower-case characters, punctuation, numbers and symbols.